Want to revisit 2009's N900 tech demo but you got rid of your old toys long ago or don't want to bother digging them out of your desk drawer? The Maemulator to the rescue! It uses QEMU user-space emulation and some LD_PRELOAD magic + other in-process trickery to get it working on any modern Linux machine that has an OpenGL driver. Add multi-sample anti-aliasing, anisotropic filtering, higher resolutions, keyboard input and various fixes, and you are all set for a few minutes of fun distraction.
